폴리아미드6/반응성 폴리프로필렌(PA6/PP-g-MA)블렌드의 기계적 특성과 모폴로지

고재송; 장윤호

Journal of the Korean Industrial and Engineering Chemistry, Vol.10, No.8, 1136-1140, December, 1999

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폴리아미드6/반응성 폴리프로필렌(PA6/PP-g-MA)블렌드의 기계적 특성과 모폴로지

Mechanical Properties and Morphology of Polyamide 6/Maleated Polypropylene Blends

고재송, 장윤호

초록

폴리아마이드6(PA6)와 무수말레산이 그라프트된 폴리프로필렌(PP-g-MA)의 용융혼합된 블렌드계를 제조하고, 이 블렌드계의 인장, 굴곡, 충격, 동적기계적열 특성 및 상구조의 변화를 조사하였다. 인장강도와 인장탄성율은 두 조성물의 혼합에 따른 상승효과가 나타났고, 굴곡특성의 경우는 두 조성물의 산술평균값을 유지함을 알 수 있었다. 그리고 충격강도의 경우는 PA6/PP-g-MA 50/50 wt % 조성에서 최대값을 보였다. Tan δ결과로부터, 두 조성물간의 반응에 의해 혼화성이 증가되었음을 확인하였다. 또한 상구조와 충격강도의 결과로부터, 본 블렌드계는 PA6 매트릭스에 PP-g-MA가 2㎛정도 크기로 고르게 분산되어진 경우에 우수한 내충격성을 갖음을 알 수 있었다.

Melt blends of polymide 6(PA6) and polypropylene grafted maleic anhydride(PP-g-MA) were prepared to study the influence of chemical reaction between the two polymer components. The tensile, flexural, izod impact, dynamic mechanical properties and phase structure were investigated for this blend system. Tensile strength and modulus of the blends showed synergetic effect upon blending of two polymer components. Flexural properties maintained the value of numerical mean calculated from the weight ratio of two components. Also, notched izod impact strengths showed maximum in th PA6/PP-g-MA 50/50 wt % blend. From the change of tan δobserved, we confirmed the increase of miscibility in this blend system by chemical reaction between PA6 and PP-g-MA. Blends of good impact resistance could be obtained when the PP-g-MA particles of 2㎛ was dispersed in the PA6 matrix.

Keywords:polymide 6;PP-g-MA;blend;miscibility;impact strength;morphology

[References]

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[1] Jordhamo GR, Manson JA, Sperling LH, Polym. Eng. Sci., 26, 517 (1986)

[2] Wu S, Polym. Eng. Sci., 7, 335 (1987)

[3] Elmendorf JJ, Van Der Vegt AK, Polym. Eng. Sci., 26, 1332 (1986)

[4] Willis JM, Favis BD, Lavallee C, J. Mater. Sci., 28, 1749 (1993)

[5] Thiele W, Compalloy '90, Schotland Business Inc. (1990)

[6] Ide F, Hasegawa A, J. Appl. Polym. Sci., 18, 963 (1974)

[7] Park SJ, Ki BK, Jeong HM, Eur. Polym. J., 26, 131 (1990)

[8] Nishio T, Suzuki Y, Kojima K, Kakugo M, 7th Annual Meeting Polymer Processing Society, Hamilton, Ontario, Canada (1991)

[9] Nishio T, Suzuki Y, Kojima K, Kakugo M, J. Polym. Eng. Jpn., 10, 123 (1991)

[10] Hosoda S, Kojima K, Kanda Y, Aoyagi M, Polym. Networks Blends, 1, 51 (1991)

[11] Holsti-Miettinen R, Seppala J, Polym. Eng. Sci., 32, 868 (1992)

[12] La Mantia FP, Adv. Polym. Technol., 12, 47 (1993)

[13] Scholz P, Froelich D, Muller R, J. Rheol., 33, 481 (1989)

[14] Paul DR, "Multicomponent Polymer Materials," ACS, Washington, DC (1996)

[15] Yu ZZ, Ou YC, Qi ZN, Hu GH, J. Polym. Sci. B: Polym. Phys., 36(11), 1987 (1998)